Convert degrees Fahrenheit to degrees Celsius
Converting degrees Fahrenheit to degrees Celsius is a common temperature task, whether you are checking a recipe, a spec sheet, a travel distance or a homework problem. Since 1 °F equals -17.2222 °C, the math is a single multiplication — and this page does it for you instantly, with the formula, a table of common values and answers to the questions people ask most.
Exact factor
How to convert degrees Fahrenheit to degrees Celsius
Apply the formula °C = (°F − 32) × 5/9. For example, 10 °F equals -12.2222 °C.
°C = (°F − 32) × 5/9
- Write down the value in degrees Fahrenheit you want to convert.
- Apply the formula: °C = (°F − 32) × 5/9.
- The result is your value in degrees Celsius. Verify it with the converter above.
Conversion table
Common values of degrees Fahrenheit and their equivalents in degrees Celsius:
| °F | °C |
|---|---|
| 1 | -17.2222 |
| 2 | -16.6667 |
| 3 | -16.1111 |
| 4 | -15.5556 |
| 5 | -15 |
| 10 | -12.2222 |
| 20 | -6.66667 |
| 25 | -3.88889 |
| 50 | 10 |
| 100 | 37.7778 |
| 250 | 121.111 |
| 500 | 260 |
About these units
Fahrenheit (°F). The Fahrenheit scale sets water's freezing point at 32° and boiling point at 212°. It is the everyday temperature scale in the United States and a few other countries.
Celsius (°C). The Celsius scale sets water's freezing point at 0° and boiling point at 100° at standard pressure. It is the everyday temperature scale in most of the world and is aligned with Kelvin.
Frequently asked questions
How do I convert degrees Fahrenheit to degrees Celsius?
Apply the formula °C = (°F − 32) × 5/9. For example, 10 °F equals -12.2222 °C. Or skip the math: type the value into the converter at the top of this page and the result updates instantly.
How many degrees Celsius are in 1 fahrenheit?
1 °F = -17.2222 °C. That is the fixed relationship used by this converter and by international standards.
How many degrees Fahrenheit are in 1 celsius?
1 °C = 33.8 °F. If you are converting in the opposite direction, use our Celsius to Fahrenheit converter for the dedicated table and FAQ.
Is the degrees Fahrenheit to degrees Celsius conversion exact?
Yes. The formulas between Celsius, Fahrenheit and Kelvin are exact by definition, so results are as precise as you need. Only the displayed digits are rounded for readability.
What is fahrenheit used for?
The Fahrenheit scale sets water's freezing point at 32° and boiling point at 212°. It is the everyday temperature scale in the United States and a few other countries.